John heatley



(No Model.)

J. HEATLEY. BUILDING BLOCK.

No. 495,411. Patented Ap'r. 11, 1893." I

' wnmsssss- K 5 T INVENTOR JOHN I-IEATIJEY, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO HIMSELF JOSEPH HENRY GITTINGS, THOMAS VENNERS, AND THOMAS R. VENNERS,

J R., OF SAME PLACE.

BUILDING-BLOCK.

SPECIFICATION forming part of Letters Patent No. 495,411, dated April 11, 1893. Application filed January 22, 1892. Serial No. 413,930. (No model.)

To all whom it may concern.-

Be it known that I, JOHN HEATLEY, of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Building-Blocks, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which- Figurel is a front elevation of an arch built of my improved bricks; and Fig. 2 is a broken cross-section on the line 11-11 of Fig. 1. Fig. 3 is a front elevation of an arch built of a modified form of bricks. Fig. 4 is a broken detail view of part of a dome built of my improved bricks. Fig. 5 is a side elevation of a wall built of my improved bricks; and Fig. 6 is a cross-sectional view on the line VIVI of Fig. 5. Fig. 7 is a perspective view of my improved brick, showing the form .used in building vertical walls. Fig. Sisa similar view of a slightly dilferent form, in which the flat sides of the brick taper toward each other, this being the form used in the arch of Fig. 1. Fig. 9 is a perspective view of another form of brick in which all the sides are tapered toward each other, this being the form employed in the dome of Fig. 4. Fig. 10 is a similar view of another modification of the brick; and Fig. 11 is a perspective view of the brick employed in the arch of Fig. 3.

My invention relates to the form of bricks employed in building constructions, and it consists in a brick provided with certain integral projections or blocks rigid therewith, whereby each brick is locked to the next, producing an extremely rigid and secure construction, all as hereinafter more fully described and set forth in the claims.

In the drawings, in which like numerals indicate corresponding parts, Figs. 7, 8 and 9 show my preferred form of brick, the brick proper 2 being provided with an integral block 3 at one end, whose sides are substan-' tially parallel with the sides of the body of the brick and which is of substantially the same width as the brick body, but which is so placed relatively theretothat the meeting edges do not register but are substantially parallel, the adjacent edges forming one corner upon the projection inclosing the corresponding angle upon the brick body.

In the form of Fig.7 both brick and projection are in the form of parallelopipedons. In that of Fig. 8 the flat top and bottom faces of the brick taper toward each'other at the end opposite the'projection. In Fig. 9 both the 'Fig. 7, except that the block is placed upon the side instead of the end of thebrick. In building the arch of Fig. 1, a brick of the form of Fig. 8 is fitted upon the wall, so that its projection locks it thereto as shown at the right of the figure, and then each succeeding brick as it is put in place looks itself to the preceding one, so that the arch can be built up without the use of any centering device,

the faces of the brick being formed with a suitable taper. The dome of Fig. 4 is built in the same way, the tapered brick of Fig. 9 being employed and no centering or forming device being necessary. In the arch of Fig. 3 the bricks are locked to each other only upon one face, and not upon the adjacent side as in Figs. 1 and 3, the brick of Fig. 11 being employed. In all the constructions, joints are broken as ordinarily, and in all, the succeeding courses are locked to the preceding ones by means of the interfitting projections.

It will be understood that many variations may be made in the shape and dimensions both of the brick and the projection or lug and in the location of the lug, without departing from my invention. The materials also may be widely varied and may be either natural or artificial.

The advantages of the peculiar forms are obvious. By its use a much stronger construction is attained than formerly and one in which passage of air or gas through the wall edge of the projection being at one side of the edge of the brick; substantially as described.

4. A building block, having a projection with tapered sides and faces, the sides and faces of the brick tapering in the same direction and the edge of the projection being at one side of the edge of the brick; substantially as described.

In testimony whereof I have hereunto set myhand this 18th day of January, 1892.

JOHN HEATLEY. V

Witnesses:

- W. B. CoRWIN, H. M. OoRWIN. 

